Gasolene-engine.



W. R. THAGKER L C. G. CLARK.

. GASOLENE ENGINE.

APPLICATION FILED 00T. 26, 1912.

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W. R. THACKER & C. G. CLARK.` GASOLENE ENGINE.

APPLICATION FILED 0OT.26, 1912. Llgy Patented Aug. 18, 19M..

WU'NESSES VV. R. THACKER @L C. G. CLARK.

GASQLENE ENGNE.

APPLICATION FILED 001226, 1912.

L l 79375 Patented 11g-18, 1914.

5 SHEETS-SHEET 3.

WTNSSES INVENTORS M CHARLES G` CLARK www Amm?,

1- Mw b W. R. THAOKER L C. Gr. CLARK.

GASOLBNE ENGINE. APPLICATION FILED 00126, 1912.

19179375 Patented Aug. 18, 1914.

5 SHEETS-SHEET 4.

WIZVESSES [N VEN T ORS W\L\.\AM R- THAQKER vmmv- Allomey- HW. R. THAGKER @L C. G. CLARK.

GASOLBNE ENGINE.

` APPLICATION FILED 00T. Z6, 1912. 1,107,375, Patented Aug. 18, 1914.

5 SHEETS-SHEET 6.

UNITED STATES PATENT OFFICE.

WILLIAM R. THACKER, OF COUNCIL BLUFFS, AND CHARLES G. CLARK., F LOGAN,

` IOWA.

GASOLENE-ENGINE.

Specification. of Letters Patent.

Patented Aug. 18, 1914.

To all whom t may concern:

Be it known that we, 'WILLIAM R. TRACKER and CHARLES G. CLARK, citizens of the United States, residing at Council Bluiis and Logan, respectively, in the counties of Pottawattamie and Harrison and State of Iowa, have invented certain new and useful Improvements in Gasolene- Engines, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to cooling means for internal combustion engines and has special reference to an internal combustion engine of the double acting two-cycle type so arranged that there is an explosion at each end of 'each stroke of the piston.

@ne object of the invention is to improve and simplify the general construction of devices of this character.

A second object of the invention is to provide an improved 4mea-ns for cooling piston rods and pistons of engines of this type.

A third object of the invention is to provide an improved cooling water circulating means for use in connection herewith.

@Vith the above and other objects in view the invention consists in general of certain novel constructions, combinations and ar rangements of parts, as will be hereinafter fully described, illustrated in the drawings, and specifically claimed.

in the accompanying drawings, like 'charaeters of refer-ence indicate like parts in the several views, and Figure 1 is a side elevation of -a portion ci an engine constructed in accordance with this invention. Fig. 2 is a similar view partly in section and partly broken away to show part of the water circulating system. Fig. '3 is a detail of the water circulating system. Fig. 41 is a detail of the compression piston and its rod showing the water circulation therein. Fig. 5 is a plan view of a cross head partly in section showing a portion of the water circulating system. Fig. 6 is a detail section through the cross head. Fig. 7 is a detail through the cross head at right angles to Fig. 6. Fig. 8 is a detail section through a pair of the cylinder heads. Fig. 9 is .a diagrammatic view of the water circulation. Fig. 10 is a plan on a reduced scale of the entire enne. g1ln carrying out the objects of this invention there is provided a combustion cylinder l0 and a compression cylinder 11. At each end of th cylinder 11 there is provided a valve 12 which controls an inlet passage 13 connected to the carbureter or mixer which serves to sup-ply the explosive mixture to the engine.

Leading from the cylinder 11 to the cylinder 10 in each of the heads 14 is a passage 15 the outlet whereof from the cylinder 11 is Icontrolled by a valve 16 normally urged to closed poition by means of a suitable spring '17. his passage 15 opens into the cylinder 10 through a port 18 which is controlled by a valve 19 having a stem 20 which passes through the cylinder head and on this head is carried a washer 21 against which bears one end of a spring 22 which normally holds the valve 19 'in position to `close the port 18.

Leading `from the cylinder 10 at each end thereof is a passage which forms the exhaust i essa-ge and this passage opens outward t rough a threaded opening 21 formed in the ledge of the cylinder head. Communicating wi-th this opening is an exhaust opening 22. Screwed into the threaded opening 21 is a valve cage 23 having an opening 24 in its side which registers with the exhaust opening 22. .This valve cage is provided with a seat 25 whereon a valve 26 is ada-pt-v ed to rest. Extending from the valve'26 is a stem 27 and on this stem is mounted a spring 28 which normally urges the valve to closed position.

ln the cylinder l0 is a piston 29 and-in the. cylinder 11 is a piston 30. Each of these pistons is provided with a suitable piston rod indicated respectively at 31 and 32 and these piston rods are respectively connected to socket 33 and arm 3i carried on a cross head 35 .sliding in the guides 36. The pistons then move iny unison. As the two pistons move to the right in Fig. 2 the valve 12 of the left hand head will open and mixture will be drawn into the compression cylinder 11. Upon reaching the end of the stroke to the right and returning to the left the charge will be compressed since there will be pressure in the left hand end of the cylinder 10 due to the explosion of the previous charge therein. Upon arriving at a predetermined point by means of suitable cam action the valve 26 in the left hand head will be open and the pressure will thereby be relieved in the left hand end of the cylinder l so that the burnt through this port. When the pressure has dropped low enough the valve 16 will open against the action of the spring 17 and the compressed new charge will rush violently into the cylinder l0 from the -cylinder 11 and strike the deilecting plate 37 thus sweeping the charge of burnt gases before it and thoroughly scavenging the left hand end of the cylinder. When the entire new charge has been received in the left hand end of the cylinder 10 the valve 26, by proper movement of the cam, is allowed to close and the eX- plosion takes place. This starts the cycle over again for this end of the cylinder.

New, as the same arrangement of head and valves is had at the other end of the cylinders a like cycle of operations will take place at the right hand end of each cylinder with the exception that the two cycles will alternate so a.that there will be an eX- plosion at each end of the cylinder 10 for every revolution of the iy wheel of the engine, the engine thus being a double acting 'two-cycle engine.

ln the water circulating system for keeping the different parts of this engine cool there is provided around each cylinder and through each head, water spaces 38. Suit ably located adjacent the cylinders is a tank 39 or other source of water supply, and this tank is connected by means of a flange 40 with a flange 41 formed on the cylinder lO.

The pump and cylinder used herewith are in the form of an oblong casting 42 which is connected tothe cylinder 10 by means of a paage 43 and with the water tank 39 by means of a pipe 44. The passage 43 leads directly to the water jacket of the cylinder 10 and is provided with an outlet valve 45 to permit the flow of water from said water jacket while preventing the return thereof. Slidable in the pump cylinder' is a hollow tube 46 which is connected to an arm 47 having a passage 48 therethrough. This arm 47 is secured to the cross head 35 and this cross head has an angularly disposed passage 49 which leads to the opening 50 of the hollow piston rod 31. On this rod 31 is carried the piston 29, the same being held between nuts 5l. This piston 29 is provided gases will escape' the tube 46 reciprocates.

with an opening or chamber ,52 in its body and through the wall of the rod 31 extends a passage 53 which forms communication between the passa e 50 and the chamber 52.

At the end o the hollow tube 46 is provided an inwardl opening valve 54. It will be obvious that the pipe 46 moves in unison with the pistons. rthe piston rod 31 projects through both cylinder heads and is connected by mea-ns of a pipe 55 with that portion of the pump casting which communicates with the pipe 44. By the backward and forward motion of the tubes 46 and 55 water is drawn out of the water jacketv into that portion of the pump casting wherein As the tube 46 moves to the left this water will be forced through the cross head and piston rod and pass through the tube 55 and up the tube 44 to the tank 39.

Having thus described the invention, what i is claimed as new, is 2- In an engine' of the class described, a cylinder, a hollow piston movable therein, a hollow piston rod in port communication with said hollow piston, and extending through said cylinder at each end, a cross head connected to said piston rod and hav.

ing a passage in communication with the interior of said rod, a pump including a pair of cylinders, a tube connected to the hollow piston rod exterior the first-mentioned cylinder, and having an end lying in one of the pump cylinders and reciprocable therein, a hollow arm projecting from said cross head and in communication with the opening therein, a tube connected with said hollow arm and reciprocable inl the second pump cylinder, means affording communication between the two pump cylinders, and valves controlling the iow of Huid through said tubes.

In testimony whereof we hereunto aflix our signatures in presence of two witnesses.

wILLiAM n. THACKER. CHARLES o. CLARK.

Witnesses:

MARIAN SHEPARD, L. C. STUART. 

